[asterisk-users] WAV49 output in sox

[Eric "ManxPower" Wieling]

Thank you!

Once I upgraded sox, it stopped seg faulting and I was able to do the 
conversion.

Tzafrir Cohen wrote:
> On Wed, Jul 25, 2007 at 03:29:49PM -0400, dave cantera wrote:
>> eric
>> try this... 
>> sox foo.wav -r 8000 foo.gsm resample -ql
>> # add -c1 to write the file in mono
>>
>> I can't remember if you have to do something special in the recording 
>> too....  depends on your recorder.. oh, now I remember.  you have set 
>> the recording to 16bit 14400 hz or something like that...  if I find it 
>> I'll re-email
>> daveC
> 
> To generate a gsm encoding: -g .
> 
> So you can convert test_pcm.wav to a gsm-encoded test_gsm.wav with:
> 
>   sox test.wav -g test_pcm.wav
> 
> now, you'd probably want it with the extension WAV, and hence have to
> tell sox the type explicitly:
> 
>   sox test.wav -g -t wav test_pcm.WAV
> 
> And let's also adjust the sample rate:
> 
>   sox test.wav -r 8000 -g -t wav test_pcm.WAV
> 
> Resample, for an even smaller file:
> 
>   sox test.wav -r 8000 -g -t wav test_pcm.WAV resample -ql
> 
> (didn't make a difference for my test file)
> 
> And let's make sure that the file is mono:
> 
>   sox test.wav -c 1 -r 8000 -g -t wav test_pcm.WAV resample -ql
> 
> I'm not sure how many of the above are actually required.
>